JP3518374B2 - Tire pressure monitoring device - Google Patents
Tire pressure monitoring deviceInfo
- Publication number
- JP3518374B2 JP3518374B2 JP32255098A JP32255098A JP3518374B2 JP 3518374 B2 JP3518374 B2 JP 3518374B2 JP 32255098 A JP32255098 A JP 32255098A JP 32255098 A JP32255098 A JP 32255098A JP 3518374 B2 JP3518374 B2 JP 3518374B2
- Authority
- JP
- Japan
- Prior art keywords
- tire
- identification code
- tire identification
- code
- registered
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000012806 monitoring device Methods 0.000 title claims description 15
- 230000015654 memory Effects 0.000 claims description 26
- 238000012544 monitoring process Methods 0.000 claims description 23
- 230000001960 triggered effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 10
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 101100286247 Mus musculus Id1 gene Proteins 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- 101100500421 Chlamydomonas reinhardtii DHC1 gene Proteins 0.000 description 1
- 101100500422 Chlamydomonas reinhardtii DHC10 gene Proteins 0.000 description 1
- 101100340322 Chlamydomonas reinhardtii IDA4 gene Proteins 0.000 description 1
- 101100286255 Mus musculus Id2 gene Proteins 0.000 description 1
- 101100340263 Mus musculus Id3 gene Proteins 0.000 description 1
- 244000097202 Rathbunia alamosensis Species 0.000 description 1
- 235000009776 Rathbunia alamosensis Nutrition 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 101150012898 id4 gene Proteins 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0471—System initialisation, e.g. upload or calibration of operating parameters
- B60C23/0472—System initialisation, e.g. upload or calibration of operating parameters to manually allocate ID codes or mounting positions, e.g. by service technicians
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0415—Automatically identifying wheel mounted units, e.g. after replacement or exchange of wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0479—Communicating with external units being not part of the vehicle, e.g. tools for diagnostic, mobile phones, electronic keys or service stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0484—Detecting an ongoing tyre inflation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Fluid Pressure (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、タイヤ空気圧モニ
タ装置に関し、特に、各タイヤにタイヤ空気圧情報を送
信する送信部を内蔵し、この送信部から送信されるタイ
ヤ空気圧情報を受信する受信部とを備えるタイヤ空気圧
モニタ装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire pressure monitoring device, and more particularly, to a tire air pressure information transmitting device for transmitting tire pressure information to each tire and a receiving unit for receiving tire pressure information transmitted from the tire transmitting device. The present invention relates to a tire pressure monitoring device.
【０００２】[0002]
【従来の技術】従来より、例えば特開平８−５０５９３
９号に開示される如く、遠隔タイヤ圧力監視システムが
公知である。この遠隔タイヤ圧力監視システムは、各タ
イヤに取り付けられタイヤ空気圧を検出し、この検出値
を符号化し、タイヤ位置の識別符号と共に送信する送信
機と、車体側に設けられ各送信機から送信された信号を
受信して解析し、ドライバ情報コンソールに供給する受
信機とを備えている。そして、タイヤの交換時に、全て
のタイヤの送信機の識別符号を受信機に記憶させて新し
いタイヤ位置をシステムに教授することを開示してい
る。2. Description of the Related Art Conventionally, for example, JP-A-8-50593.
Remote tire pressure monitoring systems are known, as disclosed in US Pat. This remote tire pressure monitoring system is attached to each tire, detects the tire pressure, encodes the detected value, and transmits it together with the identification code of the tire position, and the transmitter provided on the vehicle body side and transmitted from each transmitter. A receiver for receiving and analyzing the signal and supplying it to the driver information console. Then, when tires are replaced, it is disclosed that the identification codes of transmitters of all tires are stored in the receiver to instruct the system of new tire positions.
【０００３】[0003]
【発明が解決しようとする課題】上記従来の遠隔タイヤ
圧力監視システムのようなタイヤ空気圧モニタ装置で
は、スタンダードタイヤとスタッドレスタイヤとをシー
ズンが変わる毎に交換するような場合には、交換する毎
に全てのタイヤの送信機の識別符号を受信機に記憶させ
て新しいタイヤ位置をシステムに教授する必要があり、
非効率であるという問題があった。In the tire pressure monitoring device such as the above-mentioned conventional remote tire pressure monitoring system, in the case where the standard tire and the studless tire are replaced each time the season changes, each time the standard tire and the studless tire are replaced. It is necessary to memorize transmitter identification codes of all tires in the receiver and teach the system new tire positions,
There was a problem of being inefficient.
【０００４】本発明は、上記の点に鑑みてなされたもの
であり、受信部の記憶部に複数のタイヤセットのタイヤ
識別符号を登録させることにより、定期的にタイヤ交換
を行う際に各タイヤの識別符号を登録する必要がないタ
イヤ空気圧モニタ装置を提供することを目的とする。The present invention has been made in view of the above points, and by registering the tire identification codes of a plurality of tire sets in the storage section of the receiving section, each tire can be replaced when tires are regularly replaced. It is an object of the present invention to provide a tire pressure monitoring device that does not require registration of the identification code.
【０００５】[0005]
【課題を解決するための手段】請求項１に記載の発明
は、タイヤ空気圧を検出し、その検出値をタイヤ識別符
号と共に送信する送信部と、前記検出値及びタイヤ識別
符号を受信して前記タイヤ識別符号を記憶部に登録され
ているタイヤ識別符号と比較してタイヤを特定し、各タ
イヤのタイヤ空気圧をモニタする受信部とを有するタイ
ヤ空気圧モニタ装置であって、タイヤへの空気注入をト
リガとして、前記受信部の記憶部に、複数のタイヤセッ
トのタイヤ識別符号を登録させる。According to a first aspect of the present invention, there is provided a transmitter for detecting a tire pressure and transmitting the detected value together with a tire identification code, and receiving the detected value and the tire identification code to receive the detected value and the tire identification code. a tire pressure monitoring device having a receiving section that identifies a tire as compared with a tire identification code is registered with tire identification code in the storage unit, for monitoring the tire pressure of each tire, the air injection into the tire To
As the rig, the tire identification codes of a plurality of tire sets are registered in the storage unit of the reception unit.
【０００６】このように、受信部の記憶部へのタイヤ識
別符号の登録は、タイヤへの空気注入をトリガとして行
うため、タイヤローテーションを行ってタイヤ識別符号
の登録を行う際に、磁石等の特別な器具を必要としな
い。 As described above, since the tire identification code is registered in the storage section of the receiving section using the air injection to the tire as a trigger, when the tire identification code is registered by performing the tire rotation. need and Sina special equipment
Yes.
【０００７】請求項２に記載の発明は、請求項１記載の
タイヤ空気圧モニタ装置において、タイヤに添付された
タイヤ識別符号を読み取る符号読取手段を有し、前記符
号読取手段で読み取ったタイヤ識別符号を接続ケーブル
を通して前記受信部に供給し、前記受信部の記憶部に、
複数のタイヤセットのタイヤ識別符号を登録させる。[0007] According to a second aspect of the invention, a tire pressure monitoring device according to claim 1, further comprising a code reading means for reading the tire identification code attached to the tire, tire identification code read by said code reading means Is supplied to the receiving unit through a connection cable, and in the storage unit of the receiving unit,
Register the tire identification codes of a plurality of tire sets.
【０００８】このように、受信部の記憶部へのタイヤセ
ットのタイヤ識別符号の登録は、タイヤに添付されたタ
イヤ識別符号を符号読取手段で読み取り、接続ケーブル
を通して受信部に供給するため、近距離で複数の車両の
タイヤ識別符号の登録を同時に行っても、他の車両のタ
イヤ識別符号を誤って登録することを防止できる。As described above, the tire storage to the storage unit of the receiving unit is performed.
The tire ID code of the vehicle is registered by reading the tire ID code attached to the tire with the code reading means and supplying it to the receiving section through the connection cable. However, it is possible to prevent the tire identification code of another vehicle from being erroneously registered.
【０００９】[0009]
【発明の実施の形態】図１は、本発明の一実施例である
タイヤ空気圧モニタ装置のシステム構成図を示す。本実
施例において、タイヤ空気圧は所定の設定空気圧Ｐｓｅ
ｔとなるように調整されている。本実施例のタイヤ空気
圧モニタ装置は、タイヤ空気圧を監視し、タイヤ空気圧
が設定空気圧Ｐｓｅｔから所定値以下に低下した場合
に、タイヤ空気圧の異常を示す警報を発する装置であ
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a system configuration diagram of a tire air pressure monitoring device according to an embodiment of the present invention. In this embodiment, the tire air pressure is a predetermined set air pressure Pse.
It is adjusted to be t. The tire air pressure monitoring device of the present embodiment is a device that monitors the tire air pressure and issues an alarm indicating an abnormality in the tire air pressure when the tire air pressure drops below a predetermined value from the set air pressure Pset.
【００１０】図１に示す如く、本実施例のタイヤ空気圧
モニタ装置は、センサユニット１０、及び監視ユニット
１２を備えている。センサユニット１０は、車輪ホイー
ルの内部に取り付けられており、内蔵電池１４を電源と
して駆動される。図１に示す如く、センサユニット１０
は、タイヤ空気圧センサ１６、送信ＣＰＵ１８、不揮発
性メモリ２０、送信回路２２を備えている。As shown in FIG. 1, the tire pressure monitoring device of this embodiment comprises a sensor unit 10 and a monitoring unit 12. The sensor unit 10 is mounted inside the wheel, and is driven by the built-in battery 14 as a power source. As shown in FIG. 1, the sensor unit 10
Includes a tire pressure sensor 16, a transmission CPU 18, a non-volatile memory 20, and a transmission circuit 22.
【００１１】タイヤ空気圧センサ１６はタイヤの空気圧
に応じた信号を出力する空気圧センサである。タイヤ空
気圧センサ１６の出力信号は、送信ＣＰＵ１８に供給さ
れている。送信ＣＰＵ１８はタイヤ空気圧センサ１６の
出力信号に基づいてタイヤ空気圧を検出し、その検出値
（以下、検出値Ｐｍと称す）を不揮発性メモリ２０に記
憶されている基準値Ｐａ，Ｐｂと比較し、検出値Ｐｍに
応じた頻度で検出値Ｐｍを送信回路２２に供給する。ま
た、不揮発性メモリ２０にはタイヤ識別符号が記憶され
ており、このタイヤ識別符号は上記検出値Ｐｍと共に送
信回路２２に供給される。送信回路２２は、検出値Ｐｍ
及びタイヤ識別符号を含む無線信号を送信アンテナ２２
から監視ユニット１２に向けて送信する。The tire air pressure sensor 16 is an air pressure sensor that outputs a signal corresponding to the tire air pressure. The output signal of the tire pressure sensor 16 is supplied to the transmission CPU 18. The transmission CPU 18 detects the tire air pressure based on the output signal of the tire air pressure sensor 16 and compares the detected value (hereinafter referred to as the detected value Pm) with the reference values Pa and Pb stored in the non-volatile memory 20, The detection value Pm is supplied to the transmission circuit 22 at a frequency according to the detection value Pm. A tire identification code is stored in the non-volatile memory 20, and the tire identification code is supplied to the transmission circuit 22 together with the detection value Pm. The transmission circuit 22 detects the detection value Pm.
And a radio signal including the tire identification code are transmitted by the antenna 22.
To the monitoring unit 12.
【００１２】一方、監視ユニット１２は、車室内に設置
されており、車両のバッテリーを電源として駆動され
る。図１に示す如く、監視ユニット１２は、送受信回路
３４、受信ＣＰＵ３６、不揮発性メモリ３８、タイヤセ
ット選択スイッチ（ＳＷ）３９を備えている。受信回路
３４は受信アンテナ３２を介して、センサユニット１０
側から送信された無線信号を受信し、この信号に含まれ
る検出値Ｐｍ及びタイヤ識別符号を受信ＣＰＵ３６に供
給する。受信ＣＰＵ３６は、受信したタイヤ識別符号を
不揮発性メモリ３８に予め登録され記憶されているタイ
ヤ識別符号と比較することによりどの位置（左前輪、右
前輪、左後輪、右後輪））のタイヤから送信されたのか
を判断し、また、受信した検出値Ｐｍに基づいて、タイ
ヤ空気圧の異常の有無を判定する。On the other hand, the monitoring unit 12 is installed in the vehicle compartment and is driven by the battery of the vehicle as a power source. As shown in FIG. 1, the monitoring unit 12 includes a transmission / reception circuit 34, a reception CPU 36, a non-volatile memory 38, and a tire set selection switch (SW) 39. The receiving circuit 34 receives the sensor unit 10 via the receiving antenna 32.
The wireless signal transmitted from the side is received, and the detection value Pm and the tire identification code included in this signal are supplied to the reception CPU 36. The receiving CPU 36 compares the received tire identification code with the tire identification code registered and stored in advance in the non-volatile memory 38 to determine the tire at which position (left front wheel, right front wheel, left rear wheel, right rear wheel). Whether or not there is an abnormality in the tire air pressure is determined based on the received detection value Pm.
【００１３】ここで、不揮発性メモリ３８には、複数の
タイヤセット（例えば２セット）のタイヤ識別符号が記
憶される。例えば、図２に示すように、不揮発性メモリ
３８のアドレス＃０〜＃４にはスタンダードタイヤのタ
イヤ識別符号ＩＤＡ１〜ＩＤＡ５が登録されている。Ｉ
ＤＡ１は左前輪のタイヤ識別符号、ＩＤＡ２は右前輪の
タイヤ識別符号、ＩＤＡ３は左後輪のタイヤ識別符号、
ＩＤＡ４は右後輪のタイヤ識別符号、ＩＤＡ５はスペア
タイヤのタイヤ識別符号である。また、アドレス＃５〜
＃９にはスタッドレスタイヤのタイヤ識別符号ＩＤＢ１
〜ＩＤＢ５が記憶される。ＩＤＢ１は左前輪のタイヤ識
別符号、ＩＤＢ２は右前輪のタイヤ識別符号、ＩＤＢ３
は左後輪のタイヤ識別符号、ＩＤＢ４は右後輪のタイヤ
識別符号、ＩＤＢ５はスペアタイヤのタイヤ識別符号で
ある。不揮発性メモリ３８に登録されているいずれのタ
イヤセットのタイヤ識別符号を使用するかはタイヤセッ
ト選択スイッチ３９により指示される。Here, the non-volatile memory 38 stores tire identification codes of a plurality of tire sets (for example, two sets). For example, as shown in FIG. 2, tire identification codes IDA1 to IDA5 of standard tires are registered at addresses # 0 to # 4 of the nonvolatile memory 38. I
DA1 is the tire identification code of the left front wheel, IDA2 is the tire identification code of the right front wheel, IDA3 is the tire identification code of the left rear wheel,
IDA4 is the tire identification code of the right rear wheel, and IDA5 is the tire identification code of the spare tire. Also, address # 5
The tire identification code IDB1 of the studless tire is # 9.
~ IDB5 is stored. IDB1 is the tire identification code of the left front wheel, IDB2 is the tire identification code of the right front wheel, IDB3
Is the tire identification code of the left rear wheel, IDB4 is the tire identification code of the right rear wheel, and IDB5 is the tire identification code of the spare tire. Which tire set registered in the non-volatile memory 38 is used for the tire identification code is instructed by the tire set selection switch 39.
【００１４】なお、スペアタイヤのタイヤ識別符号が登
録されるアドレス＃４，＃９に所定値（例えばオールゼ
ロ）を登録すれば、そのタイヤセットのスペアタイヤが
装着されていないことを表す。短期間しか使用しないス
タッドレスタイヤでは、スペアタイヤを搭載しないこと
も考えられ、この場合にはアドレス＃９にオールゼロを
登録しておく。これは、アドレス＃９にスペアタイヤの
タイヤ識別符号ＩＤＢ５が登録されており、実際にはス
タッドレスタイヤのスペアタイヤを搭載していない場合
には、受信ＣＰＵ３６がスタッドレスタイヤのスペアタ
イヤから所定時間以上無線信号が送信されないときスタ
ッドレスタイヤのスペアタイヤの異常（電池切れ）と誤
判断するからである。If a predetermined value (for example, all zeros) is registered in the addresses # 4 and # 9 where the tire identification code of the spare tire is registered, it means that the spare tire of the tire set is not mounted. A studless tire that is used only for a short period of time may not be equipped with a spare tire. In this case, all zeros are registered in address # 9. This is because the tire identification code IDB5 of the spare tire is registered in the address # 9, and when the spare tire of the studless tire is not actually mounted, the receiving CPU 36 wirelessly transmits from the spare tire of the studless tire for a predetermined time or more. This is because it is erroneously determined that the spare tire of the studless tire is abnormal (battery exhausted) when no signal is transmitted.
【００１５】このように、監視ユニット１２の不揮発性
メモリ３８にに複数のタイヤセットのタイヤ識別符号を
登録させているため、例えばスタンダードタイヤとスタ
ッドレスタイヤとをシーズンが変わる毎に、つまり定期
的に交換するような場合に、各タイヤの識別符号を登録
する必要がなく、タイヤ交換を効率良く行うことができ
る。As described above, since the tire identification codes of a plurality of tire sets are registered in the nonvolatile memory 38 of the monitoring unit 12, for example, standard tires and studless tires are changed every season, that is, periodically. In the case of replacement, it is not necessary to register the identification code of each tire, and tire replacement can be performed efficiently.
【００１６】監視ユニット１２は、また、表示警告装置
４０を備えている。表示警告装置４０はタイヤ空気圧の
数値表示を行うと共に、例えば第１〜第３警告灯にてタ
イヤ空気圧の異常時に警告を行う。受信ＣＰＵ３６は不
揮発性メモリ３８に所定の第１〜第３の警報値Ｐ１、Ｐ
２、及びＰ３（Ｐ１＞Ｐ２＞Ｐ３）を記憶しており、検
出値ＰｍがＰ１、Ｐ２、及びＰ３を下回ると、順次、表
示警告装置４０の第１警告灯、第２警告灯、及び第３警
告灯を点灯させる。The monitoring unit 12 also comprises a display warning device 40. The display / warning device 40 displays a numerical value of the tire air pressure, and gives a warning when the tire air pressure is abnormal, for example, by using first to third warning lights. The receiving CPU 36 stores the predetermined first to third alarm values P1 and P in the nonvolatile memory 38.
2 and P3 (P1>P2> P3) are stored, and when the detected value Pm falls below P1, P2, and P3, the first warning light, the second warning light, and the 3 Turn on the warning light.
【００１７】第１〜第３の警報値Ｐ１〜Ｐ３はそれぞ
れ、大気圧を基準として、例えば１．５気圧、０．７気
圧、０気圧となるように設定されている。従って、第１
警告灯の点灯によりタイヤ空気圧の初期的な低下を示す
警報（第１の警報）が、第２警告灯の点灯によりタイヤ
のパンクを示す警報（第２の警報）が、第３警告灯の点
灯によりタイヤの空気が完全に抜けたことを示す警報
（第３の警報）が、それぞれ発せられることになる。The first to third alarm values P1 to P3 are set to be, for example, 1.5 atm, 0.7 atm, and 0 atm based on the atmospheric pressure. Therefore, the first
An alarm (first alarm) that indicates an initial decrease in tire pressure when the warning light is lit, an alarm that indicates puncture of the tire (second alarm) when the second warning light is lit, and a third warning light is lit. As a result, an alarm (third alarm) indicating that the tire air is completely exhausted is issued.
【００１８】なお、警報値の数は３つに限定されるもの
ではなく、１つ又は２つ、あるいは、４つ以上の警報値
を設けてもよい。また、第１〜第３警告灯に代えて、例
えば、ブザー等の音響により警報を発する警報装置を設
けてもよい。不揮発性メモリ３８にタイヤ識別符号を登
録するには、予め設けてある登録スイッチを操作して登
録モードとし、登録モードとなった後、所定時間内に例
えば左前輪、右前輪、左後輪、右後輪、スペアタイヤの
順（予め順番が決められている）にタイヤ識別符号を登
録する。勿論、登録スイッチで左前輪、右前輪、左後
輪、右後輪、スペアタイヤを指定して登録を行うよう構
成しても良い。さらに、左前輪、右前輪、左後輪、右後
輪、スペアタイヤを区別する必要がなければ、どのよう
な順番で登録を行っても良い。The number of alarm values is not limited to three, and one or two alarm values or four or more alarm values may be provided. Further, instead of the first to third warning lights, for example, an alarm device for issuing an alarm by sound such as a buzzer may be provided. To register the tire identification code in the non-volatile memory 38, the registration switch provided in advance is operated to enter the registration mode, and after the registration mode is entered, for example, the left front wheel, the right front wheel, the left rear wheel, The tire identification code is registered in the order of the right rear wheel and the spare tire (the order is predetermined). Of course, the registration switch may specify the left front wheel, the right front wheel, the left rear wheel, the right rear wheel, and the spare tire for registration. Further, if it is not necessary to distinguish the left front wheel, the right front wheel, the left rear wheel, the right rear wheel, and the spare tire, registration may be performed in any order.
【００１９】ところで、タイヤ交換（ローテーション）
を行うと、不揮発性メモリ３８に登録されているタイヤ
識別符号を再登録する必要がある。従来は、強力な磁石
等をタイヤに近づけ掃引することでセンサユニット１０
を登録モードとしてタイヤ識別符号を送信させ、このタ
イヤ識別符号を監視ユニットで受信して登録を行ってい
るが、この場合、強力な磁石のような特別な器具が必要
となる。本発明では空気注入時に不揮発性メモリ３８に
タイヤ識別符号を再登録することにより、再登録を行う
ときに特別な器具を不要としている。By the way, tire replacement (rotation)
Then, it is necessary to re-register the tire identification code registered in the non-volatile memory 38. Conventionally, the sensor unit 10 is provided by sweeping a strong magnet or the like close to the tire.
In the registration mode, the tire identification code is transmitted, and the tire identification code is received by the monitoring unit for registration, but in this case, a special instrument such as a strong magnet is required. In the present invention, the tire identification code is re-registered in the non-volatile memory 38 at the time of injecting air, thereby eliminating the need for a special device when re-registering.
【００２０】図３は本発明の送信ＣＰＵ１８が実行する
ルーチンのフローチャートを示す。このルーチンは所定
時間間隔で繰り返し実行される。図３に示すルーチンが
起動されると、先ず、ステップＳ１０が実行される。ス
テップＳ１０では、タイヤ空気圧センサ１６の出力信号
に基づいて現在のタイヤ空気圧Ｐｍが検出される。ステ
ップＳ１０に続くステップＳ１１では現在のタイヤ空気
圧Ｐｍと前回タイヤ空気圧Ｐｍｋとの差ｄＰ（＝Ｐｍ−
Ｐｍｋ）が所定値ｄＰ１を超えているか否かを判別し、
ｄＰ≦ｄＰ１の場合にステップＳ１２に進み、ｄＰ＞ｄ
Ｐ１の場合にステップＳ２４に進む。FIG. 3 shows a flowchart of a routine executed by the transmission CPU 18 of the present invention. This routine is repeatedly executed at predetermined time intervals. When the routine shown in FIG. 3 is started, first, step S10 is executed. In step S10, the current tire air pressure Pm is detected based on the output signal of the tire air pressure sensor 16. In step S11 subsequent to step S10, the difference dP (= Pm- between the current tire air pressure Pm and the previous tire air pressure Pmk).
Pmk) exceeds a predetermined value dP1,
If dP ≦ dP1, the process proceeds to step S12, and dP> d
If it is P1, the process proceeds to step S24.
【００２１】ステップＳ１２ではタイヤ空気圧Ｐｍが所
定の基準値Ｐａ（例えばＰａ＝Ｐ１）を下回っているか
否かが判別される。その結果、Ｐｍ＜Ｐａでタイヤ空気
圧に異常が発生しているならば、次にステップＳ１４が
実行される。ステップＳ１４では、タイマＴが所定値ｔ
１以上か否かを判別し、Ｔ≧ｔ１の場合はステップＳ１
６に進んでタイヤ空気圧Ｐｍ及びタイヤ識別符号を監視
ユニット１２に送信する。上記の所定値ｔ１は例えば２
〜３秒に相当する値である。この後、ステップＳ１８で
タイマＴを０にリセットしてステップＳ２２に進む。At step S12, it is judged if the tire air pressure Pm is below a predetermined reference value Pa (for example, Pa = P1). As a result, if Pm <Pa and the tire pressure is abnormal, then step S14 is executed. In step S14, the timer T is set to the predetermined value t.
It is determined whether it is 1 or more, and if T ≧ t1, step S1
In step 6, the tire pressure Pm and the tire identification code are transmitted to the monitoring unit 12. The predetermined value t1 is, for example, 2
It is a value corresponding to 3 seconds. Thereafter, the timer T is reset to 0 in step S18 and the process proceeds to step S22.
【００２２】一方、ステップＳ１４でＴ＜ｔ１の場合は
ステップＳ２０でタイマＴを１だけインクリメントして
ステップＳ２２に進む。ステップＳ２２では今回検出し
たタイヤ空気圧Ｐｍを前回タイヤ空気圧Ｐｍｋに転送
し、この処理サイクルを終了する。ステップＳ１１でｄ
Ｐ＞ｄＰ１の場合は、タイヤ空気圧の増加が急激に行わ
れた、つまり、タイヤに空気が注入されたとして、これ
をトリガとしてステップＳ２４に進み、不揮発性メモリ
３８にタイヤ識別符号を再登録するために、不揮発性メ
モリ２０から読み出したタイヤ識別符号をＮ回（数回か
ら数１０回）連続して監視ユニット１２に送信する。こ
の後、この処理サイクルを終了する。このようにタイヤ
識別符号をＮ回繰り返して送信するのは、監視ユニット
１２での受信漏れを防止するためである。On the other hand, if T <t1 in step S14, the timer T is incremented by 1 in step S20 and the process proceeds to step S22. In step S22, the tire air pressure Pm detected this time is transferred to the previous tire air pressure Pmk, and this processing cycle is ended. D in step S11
If P> dP1, it is assumed that the tire air pressure is rapidly increased, that is, if air is injected into the tire, this is used as a trigger to proceed to step S24 to re-register the tire identification code in the nonvolatile memory 38. Therefore, the tire identification code read from the nonvolatile memory 20 is continuously transmitted to the monitoring unit 12 N times (several times to several tens of times). After that, this processing cycle is ended. The reason why the tire identification code is repeatedly transmitted N times in this way is to prevent reception failure in the monitoring unit 12.
【００２３】このように、不揮発性メモリ３８へのタイ
ヤ識別符号の登録は、タイヤへの空気注入をトリガとし
て行うため、タイヤ識別符号の登録を行う際に、磁石等
の特別な器具を必要としない。なお、ステップＳ１６で
タイヤ空気圧Ｐｍ及びタイヤ識別符号を送信する信号の
フレームフォーマットを図４（Ａ）に示す。同図中、先
頭に同期用のスタートビットが設けられ、次にセンサユ
ニット１０を識別するためのタイヤ識別符号が設けられ
ている。次にタイヤ空気圧Ｐｍのコードが配置される。
そして最後に同期用のストップビットが設けられてい
る。これに対して、ステップＳ２４でタイヤ識別符号を
再登録するために送信する信号のフレームフォーマット
を図４（Ｂ）に示す。同図中、先頭に同期用のスタート
ビットが設けられ、次にセンサユニット１０を識別する
ためのタイヤ識別符号が２回繰り返して配置され、タイ
ヤ空気圧Ｐｍは配置されていない。そして最後に同期用
のストップビットが設けられている。As described above, since the tire identification code is registered in the non-volatile memory 38 using the air injection to the tire as a trigger, a special tool such as a magnet is required when the tire identification code is registered. do not do. The frame format of the signal for transmitting the tire air pressure Pm and the tire identification code in step S16 is shown in FIG. In the figure, a start bit for synchronization is provided at the beginning, and a tire identification code for identifying the sensor unit 10 is provided next. Next, the cord of the tire air pressure Pm is arranged.
Finally, a stop bit for synchronization is provided. On the other hand, FIG. 4B shows the frame format of the signal transmitted to re-register the tire identification code in step S24. In the figure, a start bit for synchronization is provided at the head, a tire identification code for identifying the sensor unit 10 is repeatedly arranged twice, and the tire pressure Pm is not arranged. Finally, a stop bit for synchronization is provided.
【００２４】このように、タイヤ空気圧Ｐｍを送信する
場合の信号フレームフォーマットと、タイヤ識別符号を
送信する場合の信号フレームフォーマットとの形式を異
ならせることにより、タイヤ識別符号を再登録している
際に、近くの車両のタイヤに設けられたセンサユニット
から図４（Ａ）の信号フレームフォーマットの信号が送
信されたとしても、図４（Ａ）の信号フレームフォーマ
ットのタイヤ識別符号が誤って再登録されることはな
い。In this way, when the tire identification code is re-registered by making the signal frame format for transmitting the tire pressure Pm different from the signal frame format for transmitting the tire identification code. Even if a signal of the signal frame format of FIG. 4 (A) is transmitted from a sensor unit provided on a tire of a nearby vehicle, the tire identification code of the signal frame format of FIG. 4 (A) is erroneously reregistered. It will not be done.
【００２５】なお、空気注入機のタイヤに空気を注入す
る口金の近傍に受信アンテナを設けておき、この受信ア
ンテナを監視ユニット１２の受信アンテナ３２に接続し
て受信感度を上げるように構成しても良く、更に、監視
ユニット１２で図４（Ｂ）の信号フレームフォーマット
の信号を受信したとき、表示警告装置４０にて受信した
タイヤ識別符号を表示しても良い。A receiving antenna is provided in the vicinity of the mouthpiece for injecting air into the tire of the air injecting device, and this receiving antenna is connected to the receiving antenna 32 of the monitoring unit 12 to increase the receiving sensitivity. Further, when the monitoring unit 12 receives a signal in the signal frame format shown in FIG. 4B, the tire identification code received by the display warning device 40 may be displayed.
【００２６】車両の製造時には不揮発性メモリ３８にタ
イヤ識別符号を登録する必要がある。従来は、強力な磁
石等をタイヤに近づけ掃引することでセンサユニット１
０を登録モードとしてタイヤ識別符号を送信させ、この
タイヤ識別符号を監視ユニットで受信して登録を行って
いるが、この場合、製造工場で複数の車両の不揮発性メ
モリ３８にタイヤ識別符号を同時に登録しようとする
と、隣接する車両のセンサユニット１０から送信された
信号が自車両の監視ユニットで受信され、誤登録のおそ
れがある。It is necessary to register the tire identification code in the non-volatile memory 38 when the vehicle is manufactured. Conventionally, the sensor unit 1 is provided by sweeping a strong magnet or the like close to the tire.
The tire identification code is transmitted in 0 as the registration mode, and the tire identification code is received by the monitoring unit for registration. In this case, the tire identification code is simultaneously stored in the nonvolatile memories 38 of a plurality of vehicles in the manufacturing plant. If an attempt is made to register, the signal transmitted from the sensor unit 10 of the adjacent vehicle may be received by the monitoring unit of the own vehicle, resulting in erroneous registration.
【００２７】本発明では不揮発性メモリ３８にタイヤ識
別符号を登録する際に、タイヤ識別符号をバーコードか
ら入力し登録を行うことにより、製造工場で複数の車両
の不揮発性メモリ３８にタイヤ識別符号を同時に登録す
ることを可能とする。このために、センサユニット製造
工程では、各センサユニット１０の不揮発性メモリ２０
に記憶されているタイヤ識別符号をバーコードでシール
（またはタグ）に記録し、このバーコード記録シールを
センサユニット１０またはその包装と対にして保存す
る。In the present invention, when the tire identification code is registered in the non-volatile memory 38, the tire identification code is entered from the bar code and registered, so that the tire identification code is registered in the non-volatile memories 38 of a plurality of vehicles at the manufacturing plant. It is possible to register at the same time. Therefore, in the sensor unit manufacturing process, the nonvolatile memory 20 of each sensor unit 10 is
The tire identification code stored in (1) is recorded on a sticker (or tag) with a bar code, and this bar code recording sticker is stored as a pair with the sensor unit 10 or its packaging.
【００２８】次に、タイヤ組立工程では、タイヤ内にセ
ンサユニット１０を設置してホイールに組み付け、この
センサユニット１０と対のバーコード記録シールを組み
立てたタイヤに貼り付ける。更に、車両組立工程では、
タイヤ及び監視ユニット１２を車両に組み付けた後、図
５に示すように、タイヤ５０に貼り付けられたバーコー
ド記録シール５２のバーコードをバーコードリーダ５４
で読み取り、読み取ったタイヤ識別符号をバーコードリ
ーダ５４から接続ケーブル５６を通して監視ユニット１
２に供給する。この場合、監視ユニット１２にバーコー
ドリーダ５４からのタイヤ識別符号を受け取り受信ＣＰ
Ｕ３６に供給するために、入力インタフェース５８が設
けられている。Next, in the tire assembling step, the sensor unit 10 is installed in the tire and assembled to the wheel, and the bar code recording sticker paired with the sensor unit 10 is attached to the assembled tire. Furthermore, in the vehicle assembly process,
After assembling the tire and the monitoring unit 12 to the vehicle, as shown in FIG. 5, the barcode of the barcode recording sticker 52 attached to the tire 50 is read by the barcode reader 54.
And the read tire identification code from the bar code reader 54 through the connection cable 56.
Supply to 2. In this case, the monitoring unit 12 receives the tire identification code from the bar code reader 54 and receives CP.
An input interface 58 is provided to supply U36.
【００２９】このように、登録時にはタイヤ識別符号が
バーコードリーダ５４で読み取られ、接続ケーブル５６
を通して監視ユニット１２に供給するため、近距離で複
数の車両のタイヤ識別符号の登録を同時に行っても、隣
接する車両のセンサユニット１０のタイヤ識別符号が自
車両の不揮発性メモリ３８に誤登録されるおそれがな
い。Thus, at the time of registration, the tire identification code is read by the bar code reader 54 and the connection cable 56 is obtained.
Therefore, even if the tire identification codes of a plurality of vehicles are simultaneously registered at a short distance, the tire identification codes of the sensor units 10 of adjacent vehicles are erroneously registered in the non-volatile memory 38 of the vehicle. There is no danger of
【００３０】なお、上記の実施例においては、センサユ
ニット１０が請求項に記載した送信部に、監視ユニット
１２が請求項に記載した受信部にそれぞれ対応し、ま
た、バーコードリーダ５４が符号読取手段に対応する。In the above embodiment, the sensor unit 10 corresponds to the transmitting unit described in the claims, the monitoring unit 12 corresponds to the receiving unit described in the claims, and the bar code reader 54 reads the code. Corresponds to the means.
【００３１】[0031]
【発明の効果】上述の如く、請求項１に記載の発明は、
受信部の記憶部へのタイヤ識別符号の登録は、タイヤへ
の空気注入をトリガとして行うため、タイヤローテーシ
ョンを行ってタイヤ識別符号の登録を行う際に、磁石等
の特別な器具を必要としない。As described above, the invention according to claim 1 is
Since the tire identification code is registered in the storage section of the receiving section by injecting air into the tire as a trigger, no special equipment such as a magnet is required when performing tire rotation to register the tire identification code. .
【００３２】請求項２に記載の発明では、受信部の記憶
部へのタイヤセットのタイヤ識別符号の登録は、タイヤ
に添付されたタイヤ識別符号を符号読取手段で読み取
り、接続ケーブルを通して受信部に供給するため、近距
離で複数の車両のタイヤ識別符号の登録を同時に行って
も、他の車両のタイヤ識別符号を誤って登録することを
防止できる。According to the second aspect of the present invention, the tire identification code of the tire set is registered in the storage section of the receiving section by reading the tire identification code attached to the tire with the code reading means and receiving the signal through the connecting cable. Therefore, even if the tire identification codes of a plurality of vehicles are simultaneously registered at a short distance, it is possible to prevent the tire identification codes of other vehicles from being erroneously registered.
【図１】本発明の一実施例であるタイヤ空気圧モニタ装
置のシステム構成図である。FIG. 1 is a system configuration diagram of a tire pressure monitoring device that is an embodiment of the present invention.
【図２】本発明の不揮発性メモリ３８のアドレスと記憶
内容との関係を説明するための図である。FIG. 2 is a diagram for explaining a relationship between addresses and stored contents of a nonvolatile memory 38 of the present invention.
【図３】本発明の送信ＣＰＵ１８が実行するルーチンの
フローチャートである。FIG. 3 is a flowchart of a routine executed by the transmission CPU 18 of the present invention.
【図４】本発明の信号フレームフォーマットを示す図で
ある。FIG. 4 is a diagram showing a signal frame format of the present invention.
【図５】本発明のタイヤ識別符号の登録を説明するため
の図である。FIG. 5 is a diagram for explaining registration of a tire identification code according to the present invention.
１０ センサユニット １２ 監視ユニット １４ 内蔵電池 １６ タイヤ空気圧センサ １８ 送信ＣＰＵ ２０，３８ 不揮発性メモリ ２２ 送信回路 ２８ 受信回路 ３４ 受信回路 ３６ 受信ＣＰＵ ３９ タイヤセット選択スイッチ ５２ バーコード記録シール ５４ バーコードリーダ ５６ 接続ケーブル ５８ 入力インタフェース 10 sensor unit 12 Monitoring unit 14 Built-in battery 16 Tire pressure sensor 18 Send CPU 20,38 Non-volatile memory 22 Transmitter circuit 28 Receiver circuit 34 Receiver circuit 36 Receiving CPU 39 Tire set selection switch 52 Barcode record sticker 54 Bar Code Reader 56 connection cable 58 Input interface
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B60C 23/00 - 23/20 G01L 17/00 Front page continuation (58) Fields surveyed (Int.Cl. 7 , DB name) B60C 23/00-23/20 G01L 17/00
Claims (2)
ヤ識別符号と共に送信する送信部と、 前記検出値及びタイヤ識別符号を受信して前記タイヤ識
別符号を記憶部に登録されているタイヤ識別符号と比較
してタイヤを特定し、各タイヤのタイヤ空気圧をモニタ
する受信部とを有するタイヤ空気圧モニタ装置であっ
て、 タイヤへの空気注入をトリガとして、前記受信部の記憶
部に、複数のタイヤセットのタイヤ識別符号を登録させ
ることを特徴とするタイヤ空気圧モニタ装置。1. A transmitter for detecting a tire pressure and transmitting the detected value together with a tire identification code, and a tire identification for receiving the detected value and the tire identification code and registering the tire identification code in a storage section. A tire air pressure monitoring device having a receiving unit for monitoring the tire air pressure of each tire by specifying a tire by comparing with a code, wherein a plurality of memory units of the receiving unit are triggered by injecting air into the tire. A tire pressure monitoring device, wherein a tire identification code of a tire set is registered.
において、 タイヤに添付されたタイヤ識別符号を読み取る符号読取
手段を有し、 前記符号読取手段で読み取ったタイヤ識別符号を接続ケ
ーブルを通して前記受信部に供給し、前記受信部の記憶
部に、タイヤセットのタイヤ識別符号を登録させること
を特徴とする タイヤ空気圧モニタ装置。2. A tire pressure monitoring device according to claim 1.
In reading the code reads the tire identification code attached to the tire
Means for connecting the tire identification code read by the code reading means.
To the receiver through a cable, and the memory of the receiver is stored.
Register the tire identification code of the tire set in the section
A tire pressure monitoring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32255098A JP3518374B2 (en) | 1998-11-12 | 1998-11-12 | Tire pressure monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32255098A JP3518374B2 (en) | 1998-11-12 | 1998-11-12 | Tire pressure monitoring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000142044A JP2000142044A (en) | 2000-05-23 |
| JP3518374B2 true JP3518374B2 (en) | 2004-04-12 |
Family
ID=18144933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32255098A Expired - Fee Related JP3518374B2 (en) | 1998-11-12 | 1998-11-12 | Tire pressure monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3518374B2 (en) |
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-
1998
- 1998-11-12 JP JP32255098A patent/JP3518374B2/en not_active Expired - Fee Related
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|---|---|
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